package com.alphay.boot.web.core.config;

import com.alphay.boot.web.security.filter.JwtAuthenticationTokenFilter;
import com.alphay.boot.web.security.handle.AuthenticationEntryPointImpl;
import com.alphay.boot.web.security.handle.LogoutSuccessHandlerImpl;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.context.annotation.Primary;
import org.springframework.core.annotation.Order;
import org.springframework.http.HttpMethod;
import org.springframework.security.authentication.AuthenticationManager;
import org.springframework.security.config.annotation.authentication.builders.AuthenticationManagerBuilder;
import org.springframework.security.config.annotation.method.configuration.EnableGlobalMethodSecurity;
import org.springframework.security.config.annotation.web.builders.HttpSecurity;
import org.springframework.security.config.annotation.web.configuration.WebSecurityConfigurerAdapter;
import org.springframework.security.config.http.SessionCreationPolicy;
import org.springframework.security.core.userdetails.UserDetailsService;
import org.springframework.security.crypto.bcrypt.BCryptPasswordEncoder;
import org.springframework.security.web.authentication.UsernamePasswordAuthenticationFilter;
import org.springframework.security.web.authentication.logout.LogoutFilter;
import org.springframework.web.filter.CorsFilter;

import javax.annotation.Resource;

/**
 * spring security配置
 *
 * @author d3code
 */
@EnableGlobalMethodSecurity(prePostEnabled = true, securedEnabled = true)
public class SecurityConfig {

  @Configuration
  @Order(99)
  public static class d3codeSecurityConfig extends WebSecurityConfigurerAdapter {
    /** 自定义用户认证逻辑 */
    @Resource(name = "userDetailsServiceImpl")
    private UserDetailsService userDetailsService;

    /** 认证失败处理类 */
    @Autowired private AuthenticationEntryPointImpl unauthorizedHandler;

    /** 退出处理类 */
    @Autowired private LogoutSuccessHandlerImpl logoutSuccessHandler;

    /** token认证过滤器 */
    @Autowired private JwtAuthenticationTokenFilter authenticationTokenFilter;

    /** 跨域过滤器 */
    @Autowired private CorsFilter corsFilter;

    /**
     * 解决 无法直接注入 AuthenticationManager
     *
     * @return
     * @throws Exception
     */
    @Bean
    @Primary
    public AuthenticationManager d3codeAuthenticationManagerBean() throws Exception {
      return super.authenticationManagerBean();
    }

    /**
     * anyRequest | 匹配所有请求路径 access | SpringEl表达式结果为true时可以访问 anonymous | 匿名可以访问 denyAll | 用户不能访问
     * fullyAuthenticated | 用户完全认证可以访问（非remember-me下自动登录） hasAnyAuthority |
     * 如果有参数，参数表示权限，则其中任何一个权限可以访问 hasAnyRole | 如果有参数，参数表示角色，则其中任何一个角色可以访问 hasAuthority |
     * 如果有参数，参数表示权限，则其权限可以访问 hasIpAddress | 如果有参数，参数表示IP地址，如果用户IP和参数匹配，则可以访问 hasRole |
     * 如果有参数，参数表示角色，则其角色可以访问 permitAll | 用户可以任意访问 rememberMe | 允许通过remember-me登录的用户访问 authenticated
     * | 用户登录后可访问
     */
    @Override
    protected void configure(HttpSecurity httpSecurity) throws Exception {
      httpSecurity
          // CSRF禁用，因为不使用session
          .csrf()
          .disable()
          // 认证失败处理类
          .exceptionHandling()
          .authenticationEntryPoint(unauthorizedHandler)
          .and()
          // 基于token，所以不需要session
          .sessionManagement()
          .sessionCreationPolicy(SessionCreationPolicy.STATELESS)
          .and()
          // 过滤请求
          .authorizeRequests()
          // 对于登录login 验证码captchaImage 允许匿名访问
          .antMatchers("/login", "/register", "/captchaImage")
          .anonymous()
          .antMatchers(
              HttpMethod.GET,
              "/",
              "/*.html",
              "/**/*.html",
              "/**/*.css",
              "/**/*.js",
              "/profile/**",
              "/system/config/configKey/sys.theme.setting")
          .permitAll()
          .antMatchers("/attachment/**")
          .permitAll()
          .antMatchers("/common/download**")
          .anonymous()
          .antMatchers("/common/download/resource**")
          .anonymous()
          .antMatchers("/swagger-ui.html")
          .anonymous()
          .antMatchers("/swagger-resources/**")
          .anonymous()
          .antMatchers("/webjars/**")
          .anonymous()
          .antMatchers("/*/api-docs")
          .anonymous()
          .antMatchers("/druid/**")
          .anonymous()
          // 除上面外的所有请求全部需要鉴权认证
          .anyRequest()
          .authenticated()
          .and()
          .headers()
          .frameOptions()
          .disable();
      httpSecurity.logout().logoutUrl("/logout").logoutSuccessHandler(logoutSuccessHandler);
      // 添加JWT filter
      httpSecurity.addFilterBefore(
          authenticationTokenFilter, UsernamePasswordAuthenticationFilter.class);
      // 添加CORS filter
      httpSecurity.addFilterBefore(corsFilter, JwtAuthenticationTokenFilter.class);
      httpSecurity.addFilterBefore(corsFilter, LogoutFilter.class);
    }

    /** 身份认证接口 */
    @Override
    protected void configure(AuthenticationManagerBuilder auth) throws Exception {
      auth.userDetailsService(userDetailsService).passwordEncoder(new BCryptPasswordEncoder());
    }
  }
}
